Waste fitting for sinks



Apr, 17, 1923.

WASTE FITTING FOR SINKS Filed Feb. '7, 1923 llllllllmlllll! n llnllym-mm,

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HARRY DEWALLACE, 0F SYRACUSE, NEVI YORK, ASESIGNOR TO J. B. WISE INCORPO- RATED, A CORTG ATON GF NEW YORK.

Application filed iebruary To all who/m, t may concern:

Be it known that l, Hain-zr Dn VA-initier., a citizen ot the llnit'ed States, residing at .tiyiacusa in the county ot Onondaga and State oi New York, have invented certain new and usei'ul improvements in Waste Fittinge tor Sinks, ot which the following is a speciiication.

rlhis invention relates to improvements in waste-fittings, and is particularly.applicable to the draining of kitchen sinks and the like. Y rihe object ot the invention is to provide a combined tsinleplug and strainer,wherein the strainer may be readily and quickly applied to and removed 'from the mouth of the plug, by a very'simple operation, and without requiring any particular skill, and wherein the strainer is formed with a` number ot projections, which snap into an annular recess `formed in the mouth of the plug, for holding the strainer in place. rlhe strainer may be readily removed, by simply prying upwardly until the retainingmeans are disengaged. A particular object of the invention` is to provide a waste-fitting 'of the class, wherein the co-acting strainer locking and retaining means are embodied in the plug and strainer, thereby eliminating all extra parts, and wherein the combined titting may be constructed by but a few simple machine operations.

The above objects and other features of the invention will be understood from the detailed description which follows, and by reference to the accompanying drawing, in which y Figure l is a side elevation ot' an ordinary sink-plug., to which my improvement is applied. Fig. 2 is a tcp-plan view ci' the same; showing the strainer operatively applied. Fig. 3 is a partial side elevation and partial central vertical section oi the waste-plug- `Fig. t is a similar view; showing the strainer locked in the mouth oi" the plug. Fig. 5 is a top-plan view o jf the waste-plug. Fig. 6 is a side elevation ci the strainer. And Fig. 7 is an enlarged broken elevational view of the combined iitting; showing the flange of the strainer split for increasing the flexibility of the same.

In the drawing, 2 represents the bottom of a sink or like lfixture, having a drain opening 2', to receive the expanded top-end of a waste-plug or bushing 3, the latter being shown with the usual substantially horizon- 7, 1923. Serial No. 617,529.

tal annulaiiange 3, which overlaps the bot.` tom around the opening 2. |The central opening in the iiange 3 comprises the mouth of the waste outlet. Bel w the :flange 3', the bushing 3 is termed with a substantially vertical annular wall or seat 3, which terminates at an annular horizontal ledge or shoulder 3b, and together said wall and said ledge torni the usual strainer socket, as 5C. Between the flange and the ledge 3b, the said wall is formed with an annular, preterably shallow semi-circular recess or groove 3 represents the barrel ot the bushing, which is usually threaded, as shown in l, to receive a nut el, by which the .fitting is clamped in place. A common waste-pipe, as 5, usually secured to the barrel 3e, by means of a gland-nut 5.

luy improved strainer comprises a shallow inverted cup-shaped disc 6, the plane body ot which is usually perforated, as at 6', tor straining the waste water as it gravitates from the sink, and the center oi' the disc is usually provided with a slotted opening 6, into which any suitable prying instrument may he inserted.y for removing the strainer from the socket 3C oit the plug. The depending annular flange 6b oit the strainer is prei'- erably arranged at right angles to the plane of the perforated disc, and the depth et the said nge is substantially the same as the depth f the socket 3, so that when the strainer is inserted in the socket 3 until its top tace comes flush with the corresponding tace ot the tia-nge 3, the bottoni margin ot' the 'Flange 6" rests upon the ledge 3b. The diameter ot' the 'flange portion ot the strainer is preferably slightly less than the diameter of the socket 3?, ai; the juncture oit the wall 3 with the ledge 3b, as best seen in Fig. 7. rlhis slight clearance between the said parts facilitates the upward tilting of one side of the strainer, for freeing it from the socket 3. The` strainer is held in the socket 3c, and is prevented trom accidental displacement, by means ot a number of integral teats or humps 6C, which are formed in the flange 6b, in a siniaple manner, by 'forcing portions ot the metal outwardly radially, as best seen in Figs. 4, 5 and 7. ylt`he teats 6C are preferably disposed in a common plane, and are arranged to register with and to engage the annular recess 3d of the plug with a snap, when the strainer is inserted in the mouth 3, to the ext-ent shown in Figs. t and 7. In

from Wobbling` or canting when subjected to the pressure required 1to1' ell'ecting the snappingl engagement olE Athe teats vwith the annular recess 3d. The teats Gc are o'l such length that \'-.'hen the strainer is lirst dropped y into the socket $5", they come to a light bearing against the wall 3 immediately above the recess Bl. To lock 'the strainer in place, it onlyv requires a slight dmnivard pressure ol? the hand to torce the teats into the groove lid. rl'his latter operation is `facilitated by a slight `flexing ot the. relatively thin gauge metal ot the flange 6') adjacent the said tents, ln case the strainer 6 is made oit heavier gauge metal, which larks the requisite flexibility. as explained, the flange 6 may be slotted or split vertically, as shown at Gl. in Fig. 7.

lli/ly improved Waste-fitting is extremely simple. By the provision oli the annular recess 3, and the radial tents (3Cv` both tbe plug and the strainer may be manufactured very cheaply` because, as comparedwith older devices ot the class. a large number of tedious andexpensive oivierations, such as thread-cutting and lug-forming, are eliminated. Furthermore. the provision of the novel strainer locking means, herein shown and described o'bviates the employment of any eXtra parts, for holding` the strainer and .plug interlocked. y

Having thus described my inventionn what l claim, is-` ll. In vva Waste-fitting tor sinks and the like, a bushing having an upwardly facing strainer socket7 the Wall ot said socket be` `ing formed with an annular groove, and

a strainer comprising a plane perforated dise and a depending annular flange, theA strainer adapted to loosely lit said socket, and lts `depending flange being provided ,alle

'with radial outwardly facing teats which are adapted to snap into said annular groove when the strainer is forced downwardly into said socket.

il. ln a. Waste-litting, the combination ot a Waste bushing comprising a barrel having a lateral flange surrounding its top end, the top portion ol the barrel adjacent said flange being enlarged and termed with an annular inwardly 'facing recess, and a. strainer comprising a iiat perforated disc portion and a depending annular flange,

`the height ol thestrainer being substantially equal to the Adepth ot' thev enlarged portion oit the barrel, and the outer Vsur- 't'ace otsaid depending` flange being formed with a number ot radial teats arranged in an .annular roivadapted to engage said annular recess jl'or locking and holding the strainer in place.

3. ln a ivaste-titting, the combination ot a Waste-bushing adapted to be inserted through the drainvopening ot a sink, the top ot' saidbushing having a lateral flange adapted to overlie the bottom ot the sink around the drain opening, the body ot said bushing immediately belovv the said flange being expanded laterally torproviding an annular ledge, and the space between said ledge and said flange comprising` a strainer socket Whose vertical nvall is formed with an annular groove, and a perforated dise strainer having a depending annular flange, the diameter `oit' the flange portion'of the strainer ybeing less than the diameter ot said socket, and the external surface of said depeinling flange being' provided with a plurality ot regularly spaced teat-s adapted to first engage the ivall of' said socket ininiediately above said annular groove and then to snap intol the said groove When the strainer is forced downwardly into Ysaid socket.

in 'testimony 

